Landslide seismic magnitude

C. H. Lin, J. C. Jan, H. C. Pu, Y. Tu, C. C. Chen, Y. M. Wu

研究成果: 雜誌貢獻期刊論文同行評審

19 引文 斯高帕斯(Scopus)

摘要

Landslides have become one of the most deadly natural disasters on earth, not only due to a significant increase in extreme climate change caused by global warming, but also rapid economic development in topographic relief areas. How to detect landslides using a real-time system has become an important question for reducing possible landslide impacts on human society. However, traditional detection of landslides, either through direct surveys in the field or remote sensing images obtained via aircraft or satellites, is highly time consuming. Here we analyze very long period seismic signals (20-50 s) generated by large landslides such as Typhoon Morakot, which passed though Taiwan in August 2009. In addition to successfully locating 109 large landslides, we define landslide seismic magnitude based on an empirical formula: Lm = log(A) + 0.55 log(δ) + 2.44, where A is the maximum displacement (μm) recorded at one seismic station and δ is its distance (km) from the landslide. We conclude that both the location and seismic magnitude of large landslides can be rapidly estimated from broadband seismic networks for both academic and applied purposes, similar to earthquake monitoring. We suggest a real-time algorithm be set up for routine monitoring of landslides in places where they pose a frequent threat.

原文???core.languages.en_GB???
頁(從 - 到)122-127
頁數6
期刊Earth and Planetary Science Letters
429
DOIs
出版狀態已出版 - 1 11月 2015

指紋

深入研究「Landslide seismic magnitude」主題。共同形成了獨特的指紋。

引用此